Vacuum structure and effective potential at finite temperature: a variational approach
Amruta Mishra; Hiranmaya Mishra; Amruta Mishra; Mehta Research Institute of Mathematics and Mathematical Sciences, 10, Kasturba Gandhi Marg, Allahabad 211 002, India; Hiranmaya Mishra; Mehta Research Institute of Mathematics and Mathematical Sciences, 10, Kasturba Gandhi Marg, Allahabad 211 002, India
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
1997-02-01
Аннотация:
We compute the effective potential for theory with a squeezed coherent-state type of construct for the ground state. The method essentially consists of optimizing the basis at zero and finite temperatures. The gap equation becomes identical to resumming the infinite series of daisy and superdaisy graphs while the effective potential includes multiloop effects and agrees with that obtained through the composite operator formalism at finite temperature.
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